The Koolatron P25 Fun-Kool Thermoelectric Cooler has a 24-liter capacity. Just plug it into any 12 volt power receptacle for hours of cooling power. You can also use the AC Adapter, sold separately, to plug the P25 Fun Kool into any household outlet. State-of-the-art thermoelectric cooling technology ensures your food and drinks are kept at a temperature up to 40 F below ambient levels.This 12V mini fridge is the perfect complement for a day trip, picnic or grocery store visit. The portable mini fridge is cool down quickly and will keep chilled foods from going bad while in transit. The outlet cord fits easily in the extra storage compartment, so it won't be misplaced.